Preliminary

Rev.01

6/16

EP1551

Typical Operating Characteristics

(Circuit of Figure 2, TA = 25°C, unless otherwise noted.)

Figure 2, Typical Application Circuit (EP1551 Evaluation Board schematic)

STEP-UPEFFICIENCY vs. LOAD CURRENT

(3.3V OUTPUT)

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

1

10

100

1000

Efficiency

@Vin=3.6V

Efficiency

@Vin=3.3V

Efficiency

@Vin=2.5V

Figure 3. EP1551 Step-up Efficiency vs Load Current